Celsius has more caffeine than Kill Cliff Ignite: 200mg vs 150mg in the same 12 oz can. That is a 50mg gap, and since the cans match, the per-serving number is the whole story.
Kill Cliff Ignite vs Celsius: the numbers
| Kill Cliff Ignite | Celsius | |
|---|---|---|
| Caffeine per serving | 150mg per 12 oz can | 200mg per 12 oz can |
| Caffeine per fl oz | 12.5mg | 16.7mg |
| Servings to reach 400mg (FDA context) | 2.7 | 2.0 |
Sources: Kill Cliff Ignite's figure is verified in our Kill Cliff Ignite caffeine guide against Caffeine Informer (source); Celsius's figure is verified in our Celsius guide against Celsius essential facts (source).
Which one should you pick?
Pick Kill Cliff Ignite when you want the lighter dose or a slower ramp, and Celsius when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Kill Cliff Ignite: the full caffeine guide
- Celsius: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does Kill Cliff Ignite or Celsius have more caffeine? Celsius: 200mg per 12 oz can versus 150mg per 12 oz can for Kill Cliff Ignite.
Which is stronger per ounce? Celsius, at about 16.7mg per fluid ounce versus 12.5mg for Kill Cliff Ignite.
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